Note: when measuring the current ratio of each instrument security factor, set the special terminal "a" ends and the second strain than the short end terminal, otherwise will cause factor is not eligible.
NOTE: When measuring instrument security factor for each current ratio, set a special terminal "A" side and the secondary strain than the end of the short circuit terminals. Otherwise, the meter factor failed.
Note: the coefficient of the instrument when measuring a current ratio, please send special terminal "A" end and two times the corresponding ratio of end terminal short circuit, otherwise it will lead to unqualified instrument coefficient.